Raised up in a military family and trained to become a bodyguard, Zhen Ai Jia is all about responsibility, loyalty and honor. But at heart, she is an ordinary young girl who is eager to fall in love. In order to prevent herself from becoming a "leftover girl" at too early of an age, she decided that her next mission will also be her last one. However, what she did not expect was that her new client, CEO of a famous vehicle company He Zhong Qi, would be such a difficult person to get along with.